U.S. patent application number 14/908785 was filed with the patent office on 2016-08-04 for impression material automatic kneading apparatus.
The applicant listed for this patent is GC CORPORATION. Invention is credited to Kazuhisa KASHIWABARA.
Application Number | 20160220335 14/908785 |
Document ID | / |
Family ID | 52431441 |
Filed Date | 2016-08-04 |
United States Patent
Application |
20160220335 |
Kind Code |
A1 |
KASHIWABARA; Kazuhisa |
August 4, 2016 |
IMPRESSION MATERIAL AUTOMATIC KNEADING APPARATUS
Abstract
An impression material automatic kneading apparatus where
packages can be replaced easily is provided. Included are: a holder
that holds a package containing pasty materials; and a main body
that is connected to an opening part of the package, sucks the
pasty materials, and kneads the pasty materials. The holder
includes: a holding member that holds the opening part of the
package; a moving member that holds an end part that is in a side
opposite to the opening part of the package, the moving member
movably arranged along the holding member; and an elastic member
one end of which is attached to the holding member and another end
of which is attached to the moving member. The holder can be
attached to and detached from the main body in a state where the
package is energized by the elastic member.
Inventors: |
KASHIWABARA; Kazuhisa;
(Tokyo, JP) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
GC CORPORATION |
Tokyo |
|
JP |
|
|
Family ID: |
52431441 |
Appl. No.: |
14/908785 |
Filed: |
June 3, 2014 |
PCT Filed: |
June 3, 2014 |
PCT NO: |
PCT/JP2014/064772 |
371 Date: |
January 29, 2016 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A61C 2202/01 20130101;
A61C 9/0026 20130101; A61C 2202/00 20130101 |
International
Class: |
A61C 9/00 20060101
A61C009/00 |
Foreign Application Data
Date |
Code |
Application Number |
Jul 30, 2013 |
JP |
2013-157538 |
Claims
1. An impression material automatic kneading apparatus that kneads
and discharges at least two kinds of pasty materials which form a
dental impression material, the apparatus comprising: a holder that
holds a package which is a container like a bag, the package
containing the pasty materials; and a main body that is connected
to an opening part of the package, sucks the pasty materials from
the package, and kneads said at least two kinds of pasty materials,
wherein the holder includes: a holding member that holds the
opening part of the package; a moving member that holds an end part
that is in a side opposite to the opening part of the package, the
moving member movably arranged along the holding member; and an
elastic member one end of which is attached to the holding member
and another end of which is attached to the moving member, and
wherein the holder can be attached to and detached from the main
body in a state where the package is energized by the elastic
member.
Description
TECHNICAL FIELD
[0001] This invention relates to impression material automatic
kneading apparatuses for forming impression materials used in the
dental field.
BACKGROUND ART
[0002] Examples of impression materials used in the dental field
include such that a powdered material and water of a proper volume
are mixed and kneaded. However, such a case is common these days
that proper amounts of two kinds of pasty raw materials
(hereinafter may be mentioned as just "pastes") are mixed in an
automatic kneading apparatus, to form an impression material,
whereby an impression material is easy to be made with a good
accuracy, and also the working efficiency can be improved. There
are some known combinations as such two kinds of pastes. Examples
of the combinations include a combination of a base paste
containing alginic acid as the main component and a hardener paste
containing gypsum as the main component. Such two kinds of pastes
are each put in separate packages that are containers formed from a
flexible material.
[0003] Automatic kneading apparatuses as described in Patent
Literatures 1 and 2 are disclosed, for example. That is, an
automatic kneading apparatus is structured so that packages in
which two kinds of pastes are attached thereto; just a proper
amount of a paste is taken out of each package if necessary; and
two kinds of the taken pastes are kneaded and discharged. At this
time, it is effective in view of discharging the pastes from the
packages without wasting anything and using the pastes in the
packages completely that the packages are attached to the automatic
kneading apparatus as being energized to stretch. Therefore, means
of holding and stretching upper and lower ends of the packages are
provided for the automatic kneading apparatus.
CITATION LIST
Patent Literature
[0004] Patent Literature 1: JPH8-24273A
[0005] Patent Literature 2: JP2002-191624A
SUMMARY OF INVENTION
Technical Problem
[0006] It sometimes takes time to attach the packages to the
automatic kneading apparatuses of Patent Literatures 1 and 2.
Particularly, operation to energize the packages is troublesome and
complicated. Users replace the packages, and thus easy replacement
is required. Besides, if the pastes are used up in the middle of
treatment, it is necessary to quickly replace the packages in order
to avoid the treatment from being delayed.
[0007] In view of the above problem, an object of the present
invention is to provide an impression material automatic kneading
apparatus where packages can be replaced easily.
Solution to Problem
[0008] The present invention will be described hereinafter.
Reference signs on the attached drawings are added in parentheses
for easy understanding of the present invention, which does not
limit the present invention to the illustrated embodiments.
[0009] The present invention is an impression material automatic
kneading apparatus (1) that kneads and discharges at least two
kinds of pasty materials which form a dental impression material,
the apparatus includes: a holder (10) that holds a package (20)
which is a container like a bag, the package containing the pasty
materials; and a main body (2) that is connected to an opening part
(21) of the package, sucks the pasty materials from the package,
and kneads said at least two kinds of pasty materials, wherein the
holder includes: a holding member (11) that holds the opening part
of the package; a moving member (15) that holds an end part that is
in a side opposite to the opening part of the package, the moving
member movably arranged along the holding member; and an elastic
member (19) one end of which is attached to the holding member and
another end of which is attached to the moving member, and wherein
the holder can be attached to and detached from the main body in a
state where the package is energized by the elastic member.
Advantageous Effects of Invention
[0010] According to the present invention, a holder that holds a
package can be attached to and detached from a main body as the
package is energized. Thus, it can be possible to replace the
package easily and quickly, as the package is energized in order to
discharge a paste without waste.
BRIEF DESCRIPTION OF DRAWINGS
[0011] FIG. 1 is a view to explain a package.
[0012] FIG. 2 is a perspective view depicting the structure of an
impression material automatic kneading apparatus 1 and packages 20
separately.
[0013] FIG. 3 is a perspective view to focus on an insertion port
4.
[0014] FIG. 4 (a) is a perspective view of a holder 10 seen from
one side, and FIG. 4(b) is a perspective view of the holder 10 seen
from a side opposite to that in FIG. 4(a).
[0015] FIG. 5 is a perspective view of the impression material
automatic kneading apparatus 1.
[0016] FIG. 6 is a perspective view to explain a scene of attaching
the package 20 to the holder 10.
[0017] FIG. 7 is a perspective view of the impression material
automatic kneading apparatus 1 where the packages 20 are
attached.
DESCRIPTION OF EMBODIMENTS
[0018] The above described effect and advantage of the present
invention are clarified from the embodiments of the invention
described in the following. Hereinafter the present invention will
be described based on the embodiments illustrated in the drawings.
It is noted that this invention is not limited to these
embodiments.
[0019] Prior to describing the impression material automatic
kneading apparatus 1 according to one embodiment, an example of a
package that is attached to the impression material automatic
kneading apparatus 1 and that contains a paste. FIG. 1 depicts an
exterior perspective view of the package 20 that is in a bulging
state with a paste contained therein. As is seen from FIG. 1, the
package 20 is a container like a bag that is formed from a flexible
member, and the paste is contained therein.
[0020] The package 20 has a cylindrical opening part 21 at its one
end side. The opening part 21 allows the inside and the outside of
the package 20 to communicate, and discharges the paste.
[0021] Two annular parts 21a and 21b are arranged around the
cylindrical outer circumferential portion of this opening part 21
at a predetermined interval in the direction of cylindrical axis of
the opening part 21. Whereby, as described later, the opening part
21 of the package 20 can be fixed to the holder 10 by sliding and
inserting an edge part of the impression material automatic
kneading apparatus 1 that forms an opening holding part 13a of the
holder 10 into between the annular parts 21a and 21b to be
engaged.
[0022] On the other hand, a lug part is formed along a side
opposite to the opening part 21 of the package 20 when the package
20 is made to have the shape of a bag by sticking parts of the
member, which composes the bag, to each other. Two recess parts 22
are provided here (only one recess part can be seen in FIG. 1).
[0023] Side face parts of the package 20 are now focused on. The
package 20 has two side face parts 23 that have wider faces in its
side parts (only one side face part can be seen and the other is
arranged on the opposite side in FIG. 1). When the paste contained
in the package 20 is reduced by use, the package 20 in a bulging
state is deformed so as to be crushed. When the package 20 is
crushed as such, deformation in a direction where two side face
parts 23 approach each other (direction represented by 1a in FIG.
1) is remarkable. According to this, the package 20 also deforms in
a direction where the end part at the opening part 21 side and the
end part at the recess parts 22 side move away from each other
(direction represented by lb in FIG. 1) so as to make their
distance long.
[0024] It is effective to apply tension (energize) to the package
20 in the direction represented by the arrow 1b in order to
efficiently discharge the paste from the package 20 without waste.
Therefore, a means for carrying out such energization is provided
for an automatic kneading means.
[0025] As illustrated in FIG. 1, the direction of connecting the
end part in the opening part 21 side and the end part in the recess
parts 22 side may be described as "package length direction", the
direction of connecting two side face parts 23 may be described as
"package thickness direction", and the direction orthogonal to the
package length direction and the package thickness direction may be
described as "package width direction".
[0026] Here, the paste contained in one package 20 is kneaded with
another paste contained in the other package 20, to form an
impression material that is used in dentistry. Materials are not
specifically limited as long as an impression material can be
formed, and known materials may be used. Examples of the materials
include a combination of one paste, which is a base paste
containing alginic acid as the main component, and the other paste,
which is a hardener paste containing gypsum as the main
component.
[0027] The impression material automatic kneading apparatus 1
according to one embodiment where such a package 20 can be attached
will be described. FIG. 2 is a perspective view of the impression
material automatic kneading apparatus 1 and the packages 20. In
FIG. 2, the structure is separated and arranged to be illustrated.
The impression material automatic kneading apparatus 1 is described
with reference to FIG. 2 and drawings indicated if necessary.
[0028] The impression material automatic kneading apparatus 1
includes a main body 2 and two holders 10.
[0029] The main body 2 is a member having a function of taking the
pastes contained in the packages 20, which are held by the holders
10 described below, out of each package 20, and kneading and
discharging the pastes. The main body 2 has a housing 3 that forms
an outer contour of the main body 2. Inside the housing 3, a
suction means for sucking and taking the pastes, and a kneading
means for kneading two kinds of the pastes, which are sucked, are
provided (not depicted). Known forms of sucking means and kneading
means may be used.
[0030] The recessed insertion ports 4 are provided for the main
body 2. The insertion ports 4 are for holders 10 to be inserted
thereinto, and one end part of each holder 10 can be inserted into
each insertion port 4. An inflow port 4a that communicates with the
suction means is provided for each insertion port 4. FIG. 3 depicts
an enlarged view to focus on a portion of one insertion port 4.
[0031] As seen from FIG. 3, the inflow port 4a is structured so
that the opening part 21 of the package 20 can be attached thereto
and detached therefrom. Thus, when the opening part 21 of the
package 20 is attached to the inflow port 4a, the paste in the
package 20 flows through the opening part 21 to the inflow port 4a,
and is supplied to the main body 2.
[0032] Further, as seen from FIG. 2, a discharging means 5 for
discharging an impression material that is composed of the kneaded
pastes is provided for the main body 2. This discharging means 5 is
not specifically limited, and known means may be applied.
[0033] The holders 10 will be described. FIG. 4 depicts a
perspective view of one holder 10. FIG. 4(a) is a perspective view
seen from the side where the package 20 is attached, and FIG. 4(b)
is a perspective view seen from the side opposite to that in FIG.
4(a). As seen from FIGS. 4(a) and 4(b), the holder 10 is structured
with a holding member 11, a moving member 15 and elastic members
19.
[0034] The holding member 11 has a back plate 12 that is like a
rectangular plate.
[0035] A base plate 13 is provided for the holding member 11. The
base plate 13 is like a plate extending from one end of the back
plate 12 in the direction of erecting on a face of the back plate
12. Thus, an approximate L-shape is formed by the back plate 12 and
the base plate 13. Here, as represented in FIG. 4, the direction
where a ridge formed by the back plate 12 and the base plate 13
extends may be described as "holder width direction", the direction
of the thickness of the back plate 12 may be described as "holder
thickness direction", and the direction orthogonal to the holder
width direction and where the back plate 12 extends may be
described as "holder length direction".
[0036] Two slits 12a that extend in the holder length direction are
arranged on the back plate 12 in the holder width direction at a
predetermined interval. Elastic member locking projections 12b that
are projections are provided at a position on a face of the back
plate 12 which is an opposite side to the face where the base plate
13 erects. This position is at an opposite side to the the base
plate 13, holding the slits 12a with the base plate 13.
[0037] Here, the back plate 12 in the holder width direction is
formed almost same as or a little larger than the size of the
package 20 in the package width direction (see FIG. 1). The back
plate 12 in the holder length direction is formed larger than the
size of the package 20 in the package length direction.
[0038] An opening holding part 13a that is a rectangular slit is
formed at the center of a tip part of the base plate 13 (an end
part in the holder thickness direction) in the holder width
direction.
[0039] Here, the thickness of the base plate 13 is almost same as
or a little thinner than the interval between the above described
annular parts 21a and 21b provided for the opening part 21 of the
package 20. The opening holding part 13a is a slit of an opened tip
side of the base plate 13. The size of the opening holding part 13a
in the holder width direction is larger than the cylindrical outer
diameter of the opening part 21, and smaller than the outer
diameters of the annular parts 21a and 21b.
[0040] The moving member 15 is a member that can be moved along the
holder length direction of the back plate 12. The moving member 15
has guides 16 each of which is arranged along both sides in the
holder width direction of the back plate 12. The guides 16 are like
plates extending in the holder length direction. Therefore, two
guides 16 are arranged as holding the back plate 12 in the holder
width direction.
[0041] An arm 17 is provided for each guide 16. The arm 17 extends
from the guide 16 in the direction same as that where the base
plate 13 erects. The arms 17 are bent at their tips in the
direction where two arms 17 approach each other.
[0042] On the other hand, two guides 16 arc, as seen from FIG.
4(b), coupled by a coupling plate 18 on the face side of the back
plate 12 where the base plate 13 does not erect. Elastic member
locking projections 18a that project in the side opposite to the
back plate 12 and guiding projections 18b that project toward the
back plate 12 are provided for the coupling plate 18. Both of two
elastic member locking projections 18a and two guiding projections
18b are provided at a predetermined interval in the holder width
direction. The guiding projections 18b are inserted into the slits
12a of the back plate 12, and are structured so as to be moved
along the slits 12a. The tips of the guiding projections 18b are
formed to be thick so as not to pass through the slits 12a, which
prevents the moving member 15 from leaving the back plate 12.
Examples of means for making the tips thick like the above include
attaching bolts.
[0043] The elastic members 19 are elastic members such as springs.
Springs are applied in this embodiment as well. As seen from FIG.
4(b), two elastic members 19 are provided in this embodiment. One
end of each elastic member 19 is locked by the elastic member
locking projection 12b of the back plate 12, and another end
thereof is locked by the elastic member locking projections 18a of
the coupling plate 18. This makes it possible to apply energetic
force to the moving member 15 when the moving member 15 is moved.
The elastic member 19 is arranged so that as described later, the
moving member 15 holds an end part of the package 20 that is in the
opposite side to the opening part 21 to be energized in the
direction of stretching the package in the holder length direction.
More specifically, if the moving member 15 is moved so as to
approach the base plate 13 as illustrated by the arrow IV in FIG.
4(b), the moving member 15 is energized in contrast in the
direction of being away from the base plate 13.
[0044] The impression material automatic kneading apparatus 1
structured as above is structured so that the holders 10 can be
attached to and detached from the main body 2. FIG. 5 depicts a
perspective view of the impression material automatic kneading
apparatus 1 in a scene of attaching the holders 10 to the main body
2. When the holders 10 are attached to the main body 2, the holders
10 are arranged so that an end part of the holding member 11 of
each holder 10 in the base plate 13 side is inserted into the
insertion port 4 of the main body 2. Whereby, the holders 10 are
held by the main body 2. At this time, the holders 10 and the main
body 2 are engaged as well by the inflow ports 4a of the main body
2 passing through the opening holding parts 13a, and by the opening
parts 21 of the packages 20 connected with these inflow ports 4a as
described below.
[0045] On the other hand, when the holders 10 leave the main body
2, the holders 10 are just lifted.
[0046] Attaching the packages 20 will be described. The packages 20
are attached to the holders 10 under a state where the holders 10
leave the main body 2. FIG. 6 depicts a perspective view in a scene
of the package 20 attached to the holder 10. FIG. 7 represents a
perspective view in a scene of the packages 20 attached to the
impression material automatic kneading apparatus 1. As seen from
FIG. 6, an edge of the opening holding part 13a that is formed at
the base plate 13 of the holder 10 is inserted into between the
annular parts 21a and 21b provided for the opening part 21 of the
package 20. Whereby, the base plate 13 is sandwiched between the
annular parts 21a and 21b, and the opening part 21 of the package
20 is locked and held by the base plate 13 of the holder 10. On the
other hand, the tips of the arms 17, which are provided for the
moving member 15 of the holder 10 and bend as facing each other,
are inserted into two recess parts 22 of the package 20,
respectively. At this time, the moving member 15 is moved in
advance against the energetic force of the elastic member 19 so as
to approach the base plate 13, and the tips of the arms 17 are
inserted into the recess parts 22 under this posture. Therefore,
the moving member 15 is inserted so as to be energized upward by
the elastic member 19. Whereby, the package 20 is held by the
holder 10 as energized in the package length direction as
represented by VI in FIG. 6. That is, the package 20 is held by the
holder 10 before attached to the main body 2 of the apparatus under
the already energized state.
[0047] The package 20 held by the holder 10 will be attached to the
main body 2. This can be carried out as well as the attachment of
the holder 10 to the main body 2 as described above. Further, the
opening part 21 of the package 20 is connected to the inflow port
4a provided for the insertion port 4 of the main body 2. This makes
it possible for the impression material automatic kneading
apparatus 1 to knead and discharge an impression material.
[0048] The package 20 can leave the main body 2 as the above in
reverse order.
[0049] As described above, according to the impression material
automatic kneading apparatus 1, the holder 10 that holds the
package 20 can be attached to and detached from the main body 2,
and the package 20 may be attached to the holder 10 leaving the
main body 2. Thus, it becomes easy to attach the package 20 to the
holder 10.
[0050] When the package is attached to the holder 10 leaving the
main body 2, the package 20 is already energized by the elastic
member 19 for discharging the paste without waste. Thus, it is not
necessary to apply any energetic force to the package 20 again when
attached to the main body 2. Thus, it is also easy to attach the
holder 10, where the package 20 is attached, to the main body
2.
[0051] According to this, for example, if the holder 10 where the
package 20 is attached in advance is prepared as a spare,
replacement can be carried out quickly even if a paste is lacked
during operation. Thus, operation can progress with almost no
interruption. Therefore, there is no need to replace pastes even if
the paste is slightly left in order to avoid a case where a paste
is used up in the middle of operation. In view of this, a paste can
be used without waste.
[0052] Because the package 20 is already energized by the elastic
member 19 when the package 20 is attached to the holder 10 leaving
the main body 2 like the above, any mechanism for energizing the
package again when the holder 10 is attached to the main body 2 is
not necessary, and a complex mechanism for energizing two support
means as disclosed in Patent Literature 2 is not necessary. Thus,
it can be possible to simplify the structure.
REFERENCE SINGS LIST
[0053] 1 impression material automatic kneading apparatus [0054] 2
main body [0055] 3 housing [0056] 4 insertion port [0057] 5
discharging means [0058] 10 holder [0059] 11 holding member [0060]
12 back plate [0061] 13 base plate [0062] 15 moving member [0063]
16 guide [0064] 17 arm [0065] 18 coupling plate [0066] 19 elastic
member
* * * * *